<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta content="width=device-width, initial-scale=1" name="viewport">
    <title>玉灵 QQ:7031633 Email:webrx@126.com</title>
    <style>
        *, html, body {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .menu {
            width: 600px;
            height: 200px;
            background-color: darkgreen;
            /*padding: 0 16px;*/
            padding: 15px;
        }

        .line {
            width: 2px;
            height: 50px;
            border-right: 1px solid #82c282;
            border-left: 1px solid #011101;
        }

        .rowline {
            width: 100%;
            height: 2px;
            border-bottom: 1px solid #82c282;
            border-top: 1px solid #011101;
            opacity: .6;
        }

        .okline {
            font-size: 0;
            line-height: 0;
            width: 100%;
            /*width: 50px;*/
            height: 2px;
        }

        .okline .a {
            font-size: 0;
            line-height: 0;
            height: 1px;
            background-image: linear-gradient(90deg, rgba(130, 194, 130, 0.0), #82c282, rgba(130, 194, 130, 0.0));
        }

        .okline .b {
            font-size: 0;
            line-height: 0;
            height: 1px;
            background-image: linear-gradient(90deg, rgba(1, 17, 1, 0), #011101, rgba(1, 17, 1, 0));
        }

    </style>
</head>

<body>

<div class="menu">
    <div class="line"></div>
    <!--<div class="line"></div>-->
    <!--<div class="rowline"></div>-->
    <div class="okline">
        <div class="b"></div>
        <div class="a"></div>
    </div>
    <br>
    <div class="okline">
        <div class="b"></div>
        <div class="a"></div>
    </div>
    <br>
    <div class="okline">
        <div class="b"></div>
        <div class="a"></div>
    </div>
    <br>
    <div class="okline">
        <div class="b"></div>
        <div class="a"></div>
    </div>
</div>
<hr>
<style>
    .arr {
        font-size: 0;
        border: 25px solid transparent;
        border-left-color: red;
    }
</style>
<div class="arr"></div>

</body>
</html>
